Organic Chemistry (6th Edition)
6th Edition
ISBN: 9781260119107
Author: Janice Gorzynski Smith
Publisher: McGraw Hill Education
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Chapter 27.4, Problem 13P
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Treating chitin with H2O, -OH hydrolyzes its amide linkages, forming a compound called chitosan. What is the structure of chitosan? Chitosan has been used in shampoos, bers for sutures, and wound dressings.
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H,NCHCNHCHCNHCHCOH
(CH)2CH H.CоН Н-ССH-СОН
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each of these tripeptides, using the three-letter codes and
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Chapter 27 Solutions
Organic Chemistry (6th Edition)
Ch. 27.1 - Prob. 1PCh. 27.1 - Problem 29.2
What form exists at the isoelectric...Ch. 27.1 - Problem 29.3
Explain why the of the group of an...Ch. 27.1 - Prob. 4PCh. 27.2 - Problem 29.5
What -halo carbonyl compound is...Ch. 27.2 - Problem 29.6
The enolate derived from diethyl...Ch. 27.2 - Problem 29.7
What amino acid is formed when is...Ch. 27.2 - Problem 29.8
What aldehyde is needed to synthesize...Ch. 27.2 - Problem 29.9
Draw the products of each...Ch. 27.3 - Prob. 10P
Ch. 27.3 - Prob. 11PCh. 27.3 - Prob. 12PCh. 27.4 - Problem 29.13
What alkene is needed to synthesize...Ch. 27.5 - Problem 29.14
Draw the structure of each peptide....Ch. 27.5 - Problem 29.15
Name each peptide using both the...Ch. 27 - Draw the product formed when the following amino...Ch. 27 - With reference to the following peptide: a...Ch. 27 - Prob. 31PCh. 27 - Histidine is classified as a basic amino acid...Ch. 27 - Tryptophan is not classified as a basic amino acid...Ch. 27 - What is the structure of each amino acid at its...Ch. 27 - What is the predominant form of each of the...Ch. 27 - 29.37 What is the predominant form of each of the...Ch. 27 - a. Draw the structure of the tripeptide A–A–A, and...Ch. 27 - 29.39 Draw the organic products formed in each...Ch. 27 - 29.40 What alkyl halide is needed to synthesize...Ch. 27 - Prob. 50PCh. 27 - Draw the structure for each peptide: (a) Phe–Ala;...Ch. 27 - 29.52 For the tetrapeptide Asp–Arg–Val–Tyr:
a....Ch. 27 - Prob. 53PCh. 27 - Prob. 54PCh. 27 - 29.55 Draw the amino acids and peptide fragments...Ch. 27 - Prob. 56PCh. 27 - Prob. 57PCh. 27 - Prob. 58PCh. 27 - 29.59 An octapeptide contains the following amino...Ch. 27 - 29.60 Draw the organic products formed in each...Ch. 27 - 29.65 Draw the mechanism for the reaction that...Ch. 27 - 29.66 Which of the following amino acids are...Ch. 27 - 29.67 After the peptide chain of collagen has been...Ch. 27 - Prob. 68PCh. 27 - Prob. 69PCh. 27 - 29.70 The anti-obesity drug orlistat works by...Ch. 27 - Prob. 71P
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- The oil flave in wintergreen is an ester made from reaction of o-hydroxybenzoic acid (salicylic acid) with methanol in presence of H+ and heat. ALso, aspirin is made by salicylic acid with acetic acid in in presence of H+ and heat. Please provide the structure:arrow_forwardGlutamic acid has three ionizable groups. The pKa of α-COOH is 2.19; a-NH 3+, 9.67; and the R-group, 4.25. What is the charge of glutamic acid at pH 10.00?arrow_forwardShow how to convert the side-chain carboxyl group to a benzyl ester using benzyl chloride as a source of the benzyl group.arrow_forward
- The structure among the following that represents an amide (peptide) bond is: N H N-H -C-O- -C-O-H A B он C-0- -C-N- D structure A structure D structure B structure C |arrow_forwardBased on this lipid structure, what kind of product is formed if NaOH is added to a triglyceride? Discuss the principle of how the product can help in the fight against the coronavirus.arrow_forwardGive the amino acid sequence of a hexapeptide that contains the amino acids Ala, Val, Ser, Ile, Gly, Tyr, and forms the following fragments when partially hydrolyzed with HCl: Gly–Ile–Val, Ala–Ser–Gly, and Tyr–Ala.arrow_forward
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- ← + 5 2 QT ΑΙ 1. SECTION A Answer BOTH questions in this section (Each question is worth 20 marks) Answer ALL parts of this question. (a) Compare the structure of the ß-lactam antibiotic A with antibiotic X shown in Figure Q1(a) in terms of how structural differences affect the following properties; (i) Spectrum of activity. (ii) Resistance to ẞ-Lactamases. (iii) Oral bioavailability. (3 marks) (3 marks) (3 marks) (b) HH H H ΗΝ Ξ S ΗΝ Ξ S CO₂H A CO₂H X Figure Q1(a) The drugs that are available for Highly Active Antiretroviral Therapy (HAART) can be broken down into five classes. Define three of these classes providing one drug example for each. (6 marks) Question 1 continued on page 2....arrow_forward8.) Which of these a-amino acids is described by the IUPAC name 2-amino-3-(4-hydroxyphenyl)propanoic acid? (Hint: draw it.) D) glutamine A) alanine B) phenylalanine C) proline E) tyrosine F) tryptophan G) threoninearrow_forwardDraw the structure of the predominant form of a mixture of alanine, lysine, and aspartic acid at (i) pH 6; (ii) pH 11; (iii) pH 2.arrow_forward
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